[null,null,["อัปเดตล่าสุด 2025-07-26 UTC"],[],[],null,["# CreateBooking Ready\n\nTo complete the `CreateBooking` Ready milestone task, you need to successfully\nbuild and deliver the `CreateBooking` method. This method is called when a user\nattempts to create a booking. If a successful booking is created, the response\nincludes a unique `booking_id` to refer to the booking for future requests or\nupdates.\n\nCreateBooking task requirements\n-------------------------------\n\n- 10 successful `CreateBooking` responses with an error rate less than 10%.\n\nCreateBooking basics\n--------------------\n\nWhen a user initiates a booking, a `CreateBooking` request is sent to the\npartner Booking Server. The response to the request indicates either a\nsuccessful booking or booking failure. If there is a booking failure, the\nresponse needs to include the business logic error for failure. For example, the\nslot has become unavailable or the slot has been already booked by the same\nuser.\n\nWhen a user creates a booking, Google sends you the user's given name, surname,\nphone number, and email. For more information, see\n[Account matching and creation policy](/actions-center/verticals/reservations/e2e/policies/platform-policies#account_matching_and_creation_policy).\n| **Note:** Business logic errors must be returned in the `CreateBookingResponse.booking_failure` field, rather than through a non-200 HTTP response code.\n| **Warning:** Booking failures because of the unavailability of the slot are considered `CreateBooking` errors. Your integration can be disabled when there are many `CreateBooking` errors. High error rate for `CreateBooking` availability errors indicate that your `BatchAvailabilityLookup` slot click response doesn't accurately reflect real-time inventory.\n\n### Idempotency\n\nCommunication over the network isn't always reliable, and Google can retry HTTP\nrequests if no response is received. For this reason, all methods that mutate\nstate must be idempotent:\n\n- `CreateBooking`\n- `UpdateBooking`\n\nFor every request message, except `UpdateBooking`, idempotency tokens are\nincluded to uniquely identify the request. This lets you distinguish between a\nretried REST call, with the intent to create a single request and two separate\nrequests. The respective booking entry IDs of the `UpdateBooking` help to\nuniquely identify them, so no idempotency token is included in their requests.\n\nThe following are some examples of how Booking Servers handle idempotency:\n\n- A successful\n [`CreateBooking`](/actions-center/verticals/reservations/e2e/reference/booking-server-api-rest/e2e-methods/createbooking-method)\n HTTP response includes the created booking. In some cases, payment is processed\n as part of the booking flow. If the same `CreateBookingRequest` is received a\n second time with the same `idempotency_token`, the same `CreateBookingResponse`\n must be returned. A second booking isn't created, and\n the user is charged exactly once, if applicable.\n\n | **Note:** If a `CreateBooking` attempt fails and the same request is re-sent, your backend must retry the `CreateBooking` request.\n\nThe idempotency requirement applies to all methods that mutate state."]]
